linux-kernel - [PATCH] iio: light and pressure: change data fields for ambient light and pressure sensor

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Date:   Thu,  3 Nov 2016 18:43:34 +0800
From:   "Ooi, Joyce" <joyce.ooi@...el.com>
To:     Jiri Kosina <jikos@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-input@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ooi Joyce <joyce.ooi@...el.com>,
        Kweh Hock Leong <hock.leong.kweh@...el.com>,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        Lay Kuan Loon <kuan.loon.lay@...el.com>
Subject: [PATCH] iio: light and pressure: change data fields for ambient light and pressure sensor

Sensitivity Percent Relative is added for ambient light sensor as it is
used based on HID Sensor Usages specifications.

Other changes include adding HID_USAGE_SENSOR_LIGHT_ILLUM and
HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE for ambient light and pressure
sensor respectively to be in sync with HID Sensor Usages specifications.

Signed-off-by: Ooi, Joyce <joyce.ooi@...el.com>
---
 drivers/iio/light/hid-sensor-als.c      | 10 ++++++++++
 drivers/iio/pressure/hid-sensor-press.c | 10 ++++++++++
 include/linux/hid-sensor-ids.h          |  1 +
 3 files changed, 21 insertions(+)

diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index 8bb1f90..6f3ca18 100644
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -252,6 +252,16 @@ static int als_parse_report(struct platform_device *pdev,
 			st->common_attributes.sensitivity.index,
 			st->common_attributes.sensitivity.report_id);
 	}
+	if (st->common_attributes.sensitivity.index < 0) {
+		sensor_hub_input_get_attribute_info(hsdev,
+			HID_FEATURE_REPORT, usage_id,
+			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_REL_PCT |
+			HID_USAGE_SENSOR_LIGHT_ILLUM,
+			&st->common_attributes.sensitivity);
+		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+			st->common_attributes.sensitivity.index,
+			st->common_attributes.sensitivity.report_id);
+	}
 	return ret;
 }
 
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c
index 6848d8c..4cbbf88 100644
--- a/drivers/iio/pressure/hid-sensor-press.c
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@ -249,6 +249,16 @@ static int press_parse_report(struct platform_device *pdev,
 			st->common_attributes.sensitivity.index,
 			st->common_attributes.sensitivity.report_id);
 	}
+	if (st->common_attributes.sensitivity.index < 0) {
+		sensor_hub_input_get_attribute_info(hsdev,
+			HID_FEATURE_REPORT, usage_id,
+			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+			HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE,
+			&st->common_attributes.sensitivity);
+		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+			st->common_attributes.sensitivity.index,
+			st->common_attributes.sensitivity.report_id);
+	}
 	return ret;
 }
 
diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
index f2ee90a..755f5e2 100644
--- a/include/linux/hid-sensor-ids.h
+++ b/include/linux/hid-sensor-ids.h
@@ -141,6 +141,7 @@
 /* Per data field properties */
 #define HID_USAGE_SENSOR_DATA_MOD_NONE					0x00
 #define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS		0x1000
+#define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_REL_PCT		0xE000
 
 /* Power state enumerations */
 #define HID_USAGE_SENSOR_PROP_POWER_STATE_UNDEFINED_ENUM	0x200850
-- 
1.9.1